Home / 13,612.53-18,785.75-7,645.26

Finding the Fourth Proportional to 13,612.53, 18,785.75 and 7,645.26

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Solution

The fourth proportional to 13,612.53, 18,785.75 and 7,645.26 is: 10,550.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.53 : 18,785.75 = 7,645.26 : x
  2. Step 2: Convert to fraction form
    13,612.53/18,785.75 = 7,645.26/x
  3. Step 3: Cross multiply
    13,612.53x = 18,785.75 × 7,645.26
  4. Step 4: Simplify right side
    13,612.53x = 143,621,943.05
  5. Step 5: Solve for x
    x = 143,621,943.05/13,612.53
  6. Step 6: Final answer
    x = 10,550.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.